.main_body{
       height: 800px;
       width: 100%;
       background-image: url("../images/beijintu.jpg");
       float: left;
    
    }
    .main_body_file{
        position: absolute;
        width:100%;
        top: 50%;
        margin: 0 auto;
    }
    .s_ipt{
    position: absolute;
    width: 395px;
    height: 24px;
    font:14px arial;
    display:block;
    margin: 0 auto;
    background: 0 0;
    color:#fff;
    margin-top: 6px;
    border: 0px;
    
    }
    
   .st_tips {
	background: #000;
	width: 174px;
	height: 40px;
	line-height: 40px;
	padding: 0;
	color: #666;
	position: absolute;
	top: 40px;
	left: -78px;
	text-indent: 0;
	cursor: default;
	border: 0;
	border-radius: 2px;
	font-size: 14px;
	text-align: center;
	z-index: 1500;

}
.search{
background-color: rgba(128,121,121,.3);
width: 600px;
margin-right: auto;
margin-left: auto;

}
.search_btn{
width: 600px;
margin-top: 100px;
border:2px solid #fff;
height: 50px;
}
.form-control{
border:0px solid #fff;
height: 50px;
color: #fff;
background-color: rgba(128,121,121,.0);

}
.form-control_img{
width: 25px;
height: 25px;
margin: 0 15 0 5;
}
.input-group-btn_img{
width: 2px;
height: 25px;
background-color: rgba(245,237,237,.4)
}
.tup1{
width: 800px;
height:400px;
background-color: rgba(128,121,121,.9);
border-radius:10px;
margin-right: auto;
margin-left: auto;
margin-top:30px;
display: block;

}
.panel-heading{
margin:0 auto;
text-indent:20px; 
width:100%;
padding:10px 0;
font-size:20px;
border-bottom:2px solid #ece4e4a3;
color:#ece4e4a3
}
.tup2{
width: 1200px;
height:500px;
background-color: rgba(128,121,121,.9);
border-radius:10px;
margin-right: auto;
margin-left: auto;
margin-top:30px;
display: none;
}
.tup3{
width: 1200px;
height:500px;
background-color: rgba(128,121,121,.9);
border-radius:10px;
margin-right: auto;
margin-left: auto;
margin-top:30px;
display: none;
}
.panel-heading1{
margin:0 auto;
text-indent:20px; 
width:100%;
padding:10px 0;
font-size:20px;
border-bottom:2px solid #ece4e4a3;
color:#ece4e4a3
}
.loading{
width: 600px;
height: 200px;
background: #fff;

margin-top:-120px;
float: left;
}